Slug is a common name for an apparently shell - less terrestrial gastropod mollusc.

Slugs can attack the flowers stems and leaves of Bromeliads. They usually hide down in the lower leaves where there is dampness during the day and move upwards during the night to feed.

The image shows slug damage to the spike of an Aechmea

While chemical bate can be used to kill slug a yeast mixture with flour and sugar can attract them and they drown in the mixture.

Birds can catch and eat many. With heavy infestations, I wait until dark and go around the plants with a torch, picking the slugs off and tossing them into a bucket of water. Some evenings I have even done two rounds catching as many as 60 then another 50 an hour later.